590  
FOUS54 KMEG 282155  
PFWMEG  
 
FIRE WEATHER POINT FORECAST MATRICES  
NATIONAL WEATHER SERVICE MEMPHIS TN  
355 PM CST MON NOV 28 2022  
 
MSZ002-291000-  
WINBORN NFDRS SITE-MARSHALL MS  
34.69N 89.30W ELEV. 500 FT  
355 PM CST MON NOV 28 2022  
 
DATE 11/28/22 TUE 11/29/22 WED 11/30/22 THU  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
CST 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
 
MIN/MAX TEMP 46 67 41 50 28  
TEMP 52 47 47 47 47 57 63 65 65 66 66 61 43 44 47 49 41 34 32 30 28  
DEWPT 47 46 45 45 46 54 60 62 64 64 64 60 42 36 29 26 27 26 26 22 20  
MIN/MAX RH 100 84 100 40 78  
RH 83 96 93 93 96 90 90 90 97 93 93 97 96 73 49 40 57 72 78 72 71  
WIND DIR SE SE SE SE SE S S S S S SW W NW N N N N N N N NE  
WIND SPD 2 3 3 4 6 10 12 11 10 9 6 9 11 12 10 9 3 2 2 3 3  
WIND GUST 25 24 23 21 20 27 25 20  
CLOUDS CL FW CL FW FW B1 OV OV B2 OV B2 B1 FW CL CL CL CL FW FW FW FW  
CLOUDS(%) 4 14 5 11 9 66 93 94 87 90 84 63 24 4 1 1 1 8 8 9 22  
POP 12HR 0 90 90 0 0  
QPF 12HR 0 0.51 0.40 0 0  
RAIN SHWRS SC O O O SC IS  
TSTMS IS O O O SC  
T WIND DIR S SE S S S S S S S S SW W N N N N N N N N NE  
T WIND SPD 3 11 14 14 14 17 21 14 20 23 23 27 27 20 16 13 8 6 8 9 9  
MIXHGT M AGL 25 39 300 304 321 444 843 910 64 38  
MIXHGT FT AGL 82 128 984 998 1054 1457 2766 2984 209 126  
MIXHGT M MSL 147 161 422 426 443 566 965 1031 186 160  
MIXHGT FT MSL 482 528 1384 1398 1454 1857 3166 3384 610 526  
TRANSWIND DIR SE S S S S W N N N N  
TWIND SPD M/S 4 6 8 8 10 11 9 5 3 4  
TWIND SPD MPH 10 14 18 18 23 26 20 12 6 9  
VENT INDEX 790 3408 5852 8248 1132  
CATEGORY DAY 1 2 3 4 1  
500M MIXHGT T 59 61 64 67 70 64 42 45 43 41  
500M TWND DIR S S S S S W NW N NE NE  
500M TWND M/S 7 13 12 15 13 11 10 5 6 8  
500M TWND MPH 17 29 27 34 29 26 23 11 13 18  
DISPERSION 13 13 39 26 31 51 52 10 7 8  
LAL 1 1 2 5 5 3 1 1 1 1  
LASI 5 4 4 2 3 3 4 4 4 4  
STABILITY F F C C D E C D F E  
STAG INDEX 3 2 1 2 3  
 
DATE 12/01/22 FRI 12/02/22 SAT 12/03/22 SUN 12/04/22 MON 12/05/22  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
CST 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
 
MAX/MIN TEMP 49 34 57 49 63 46 61 51 67  
TEMP 46 40 34 37 53 50 51 53 61 55 49 46 57 54 53 56 65 62  
DEWPT 23 28 30 33 40 45 51 53 56 54 48 46 50 54 53 56 61 61  
RH 40 62 85 85 61 83100 100 84 96 96 100 77100100 100 87 97  
WIND DIR E SE S S SW NE SE S SW  
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15  
AVG CLOUDS SC SC SC B1 B1 B2 B2 B2 B2 B2 B2 OV OV B2 B2 OV OV B2  
POP 12HR 0 5 20 40 40 40 40 40 40  
RAIN SHWRS IS IS IS SC SC SC SC SC SC SC SC SC SC SC  
 

 
 
BELOW IS A WEATHER ELEMENT KEY FOR THIS PRODUCT  
 
DAY 1 THROUGH 3...  
 
MAX/MIN TEMP OR MIN/MAX TEMP (F)....MAXIMUM/MINIMUM AIR TEMPERATURE  
TEMP (F)............................AIR TEMPERATURE  
DEWPT (F)...........................DEW POINT TEMPERATURE  
MIN/MAX RH OR MAX/MIN RH (%)........MAXIMUM/MINIMUM HUMIDITY  
RH (%)..............................RELATIVE HUMIDITY  
WIND DIR (8 POINT COMPASS)..........20 FT. WIND DIRECTION  
WIND SPD (MPH)......................20 FT. WIND SPEED  
WIND CHILL (F)......................WIND CHILL  
HEAT INDEX (F)......................HEAT INDEX  
CLOUDS (CAT)........................CLOUD COVER CATEGORY  
EXAMPLE: CL = CLEAR; FW = FEW; SC = SCATTERED;  
B1 = MOSTLY CLOUDY; B2 = CONSIDERABLE CLOUDS; OV = OVERCAST  
CLOUDS (%)..........................CLOUD COVER AS A PERCENTAGE  
POP 12HR (%)........................PROBABILITY FOR ACCUMULATING PRECIPITATION  
QPF 12HR (IN).......................LIQUID EQUIVALENT PRECIPITATON AMOUNT  
WEATHER...  
TYPE...  
RAIN...........RAIN  
RAIN SHWRS.....RAIN SHOWERS  
TSTMS..........THUNDERSTORMS  
DRIZZLE........DRIZZLE  
SNOW...........SNOW  
SNOWSHWRS......SNOW SHOWERS  
SLEET..........SLEET  
FLURRIES.......FLURRIES  
FRZG RAIN......FREEZING RAIN  
FRZG DRZL......FREEZING DRIZZLE  
COVERAGE...  
IS.............ISOLATED  
SC.............SCATTERED  
NM.............NUMEROUS  
O..............OCCASIONAL  
S..............SLIGHT CHANCE  
C..............CHANCE  
L..............LIKELY  
WD.............WIDESPREAD  
D..............DEFINITE  
AR.............AREAS  
PA.............PATCHY  
OBVIS...............................OBSTRUCTION TO VISIBILITY  
TYPE...  
F..............FOG  
PF.............PATCHY FOG  
+PF............PATCHY DENSE FOG  
F+.............DENSE FOG  
H..............HAZE  
BS.............BLOWING SNOW  
K..............SMOKE  
BD.............BLOWING DUST  
MIXHGT M AGL........................MIXING HEIGHT IN METERS ABOVE GROUND LEVEL  
MIXHGT FT AGL.......................MIXING HEIGHT IN FEET ABOVE GROUND LEVEL  
MIXHGT M MSL........................MIXING HEIGHT IN METERS MEAN SEA LEVEL  
MIXHGT FT MSL.......................MIXING HEIGHT IN FEET MEAN SEA LEVEL  
TRANSWIND DIR (8 POINT COMPASS).....TRANSPORT WIND DIRECTION  
TWIND SPD MS (M/S)..................TRANSPORT WIND SPEED IN METERS PER SECOND  
TWIND SPD MPH (MPH).................TRANSPORT WIND SPEED IN MILES PER HOUR  
VENT INDEX (M2/S)...................VENT INDEX IN METERS SQUARED PER SECOND  
CATEGORY DAY........................CATEGORY DAY BASED ON VENT INDEX  
EXAMPLE: 1 = <2000; 2 = >=2000 AND <4000; 3 = >=4000 AND <8000;  
4 = >=8000 AND <16000; 5 = >=16000  
500M MIXHGT T (F)...................SURFACE TEMPERATURE NEEDED TO CREATE MIXING  
UP TO 500 METERS ABOVE THE GROUND  
500M TWND DIR (8 POINT COMPASS).....TRANSPORT WIND DIRECTION AT 500 METERS AGL  
500M TWND M/S.......................TRANSPORT WIND AT 500 METERS AGL IN M/S  
500M TWND MPH.......................TRANSPORT WIND AT 500 METERS AGL IN MPH  
DISPERSION..........................DISPERSION INDEX FOR SMOKE DISPERSION  
EXAMPLE: 1-6 = VERY POOR; 7-12 = POOR; 13-20 = GENERALLY POOR  
21-40 = FAIR; 41-60 = GENERALLY GOOD; 61-100 = GOOD  
101+ = EXCELLENT  
LAL.................................LIGHTNING ACTIVITY LEVEL  
EXAMPLE: 1 = NO THUNDERSTORMS; 2 = ISOLATED THUNDERSTORMS  
3 = WIDELY SCATTERED THUNDERSTORMS; 4 = SCATTERED THUNDERSTORMS  
5 = NUMEROUS THUNDERSTORMS; 6 = DRY LIGHTNING WITH NO RAIN  
LASI (SAME AS HAINES INDEX).........LOWER ATMOSPHERIC SEVERITY INDEX  
MEASURES FIRE GROWTH POTENTIAL  
EXAMPLE: 1-3 = VERY LOW; 4 = LOW; 5 = MODERATE; 6 = HIGH  
STABILITY...........................STABILITY CLASS  
EXAMPLE: A = VERY UNSTABLE; B = MODERATELY UNSTABLE; C = SLIGHTLY UNSTABLE  
D = NEUTRAL; E = SLIGHTLY STABLE; F = MODERATELY STABLE  
G = VERY STABLE  
STAG INDEX..........................STAGNATION INDEX  
EXAMPLE: 0 = WINDS >= 10 MPH; 1 = WINDS <= 10 MPH WITH RAIN  
2 = DRY WITH DECENT WINDS  
3 = DRY WITH LIGHT WINDS AND STAGNATE CONDITIONS  
WATCH/WARNING/ADVISORY...  
EXAMPLE: W = WARNING; Y = ADVISORY; A = WATCH  
IN EFFECT FOR THE INDICATED HOUR  
 
DAY 4 THROUGH 7...  
 
MAX/MIN TEMP OR MIN/MAX TEMP (F)....MAXIMUM/MINIMUM AIR TEMPERATURE  
TEMP (F)............................AIR TEMPERATURE  
DEWPT (F)...........................DEW POINT TEMPERATURE  
RH (%)..............................RELATIVE HUMIDITY  
WIND DIR (8 POINT COMPASS)..........20 FT. WIND DIRECTION  
WIND SPD (MPH)......................20 FT. WIND SPEED  
AVG CLOUDS (CAT)....................AVERAGE CLOUD COVER CATEGORY  
POP 12HR (%)........................PROBABILITY FOR ACCUMULATING PRECIPITATION  
WEATHER...  
SEE DAY 1 THROUGH 3 WEATHER DESCRIPTIONS  
 
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